Car part.



W. D. FORSYTH. GAR PART,

APPLIGATION FILED DEG4,.1913.

1,125,292., Patented Jan. 19. 1915.

2 SHEETS-SHEET 1.

THE NURRIS PETERS CO.. F'HOTC-LITHa. WASHINGTON, D. C.

W. D. FORSYTH.

CAR PART.

APPLICATION FILED DB0. 4, 1913.

1,125,292. Patented Jan. 19, 1915.

2 SHEETS-'SHEET' 2.

WITNESSES INVENTOR,

THE NDRRIS PETERS Co., PHDTQLITHO WASHINGTON. D. C.

UNITED STATES PATENT OFFICE. y

WILLIAM D. FORSYTH, OF YOUNGSTOWN, OHIO, ASSIGNOR TO RAILWAY PRODUCTS CORPORATION, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

CAR 15AM.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed December 4, 1913. Serial No. 804,675.

To all whom it may concern.'

Be it known that I, WILLIAM D. FoRsYTH, a citizen of the United States, and a resident of Youngstown, in the county of Mahoning and State of Ohio, have invented new and useful Improvements in Car Parts, of which the following is a specification.

My invention relates to the parts of railway cars, such as bolsters, truck side frames, brake beams, and the like.

The principal obj ect of my invention is to produce a truss member for a car part which constitutes the compression and tension members of a king-post truss and which can be cheaply and easily made from a single plate of metal.

A further object is to produce a truss member of the character specified which will be strong and yet light, and which will be slightly resilient.

Further objects are to attain certain advantages as will be more fully set forth hereinafter.

The invention consists in a truss member which constitutes the compression and tension members of a king-post truss and in which the portions thereof are integral and made from a single metal plate.

In the accompanying drawings, which form part of the specification, and in which like reference characters refer to like parts throughout the severalviews,-Figure 1 is an end elevation of a blank from which a truss member embodying my invention is made, said blank being a slotted plate; Fig. 2 is a plan View of the blank shown in Fig.

. 1, showing the slots therein; Fig. 3 is an end of has been stretched and expanded, showing the finished truss member; Fig. 9 is an en'd elevation of the finished truss member shown in Fig. 8; Fig. 10 is an end elevation of the finished truss member showing a modied construction; and Fig. 11 is a section similar to the section shown in Fig. 7, showing the modified construction.

In making the preferred form of the truss member for a car part, a blank 1, which is an oblong plate, is cut through by two spaced slots 2, which extend longitudinally of said plate and terminate short of its ends. These slots 2 are shown as straight and parallel, but they may be curved or otherwise shaped according to the proportions of the finished truss member desired. The edge portions of the blank 1 around the slots 2 are bentat right angles to the blank 1 to form flanges 3 surrounding said slots. The flanges 3 surrounding both slots 2 project from the blank in the same direction. After the edge portions of the plate around the slots 2 have been bent as described, the side portions 6 and 7 of the blank 1 are bent at right angles to said blank, preferably along the longitudinal aXis of the slots 2, as indicated by the dotted lines 1, to form a channel. The side portions 6 and 7 of the blank 1 are bent so as to project from the middle portion 5 lof the blank 1, that is, the portion bordered by the slots 2, in a direction opposite to the direction in which the anges 3 surrounding the slots 2 project from the blank 1. The bottom or web of this channel consists of the middle portion 5 of the blank 1, that is, the portion bordered by the slots 2, and end portions 5a. The sides or flanges of said channel consist of the side portions 6 and 7 of the blank 1. The middle portion 5 of the blank 1 is stretched in a suitable manner, and is then displaced from the plane of the end portions 5a in a direction perpendicular to the plane of said end portions 5a, that is, perpendicularly to its own plane. When the middle portion 5 is displaced, the flanges 3 thereon are twisted so that throughout the middle region of said middle portion they project downwardly, and at the end region they project sidewise,

substantially in the plane of said middle portion 5. The end portions of the flanges 3 on the side portions 6 and 7 merge into the edges of the middle portion 5. rlhe end portions 5a of the blank 1 are not bent nor stretched and remain in the same plane as the original plane of theA middle portion 5. The side portions 6 and 7 are also displaced from the plane of the end portions 5a, but in a direction opposite to the direction in which the middle portion 5 is displaced. The opening 10 between the side portions 6 and 7 and the middle portion 5 is adapted to receive a tie or strut to complete a kingpost truss.

ln the modification shown in Figs. l0 and 11. the side portions 6 and 7 have flanges 12 along their edges. The original plate is made wider to provide the necessary metal for these flanges 12, and these flanges may be bent during any step of making the truss member.

The truss member, hereinbefore described, constitutes the tension and compression members of a king-post truss and is made from a single metal plate by cutting, bending or pressing operations which may be performed by suitable presses, dies `or other apparatus. The different operations may be carried out while the metal plate is hot or cold. The parts of the truss member are integral, and the fibers of the metal where they join are in vsubstantially the same condition as in the original metal plate. The truss member is consequently vstronger than if the parts thereof were made of separate pieces of the corresponding size riveted together. rThe side portions 6 and 7 constituting the compression members 'are stifened by the flanges 3; and in the modified construction they are further stiffened by the flanges 12. The middle portion 5, constituting the tension member, is of uniform crosssection throughout its length and is' stiff'ened by the flanges. The flanges 3 at the middle region of Said middle poi-tion extend away from the opening 10, and thus increase its strength to resist bending and tension.

The invention is shown as embodied in a truss member which is particularly adapted for oar part, but the invention is not limited to Car parte and be used for other purposes. y

The particular construction shown and described 'can be eonsi'derably modified ivith'- out departing from my invention, 'and do not wish to be limited to the details of this particular Construction.

What I claim as my invention is:

1. A. blank for making 'a car part comprising a metal plate havinghtwo spaced slots therein extending longitudinally thereof and terminating short of its ends, said plate having a continuous flange surrounding each of said slots.

2. A blank for making a car part comprising a metal plate having two spaced slots therein eXtending longitudinally of said plate and terminating short of its ends, said plate having a continuous flange surrounding each of said slots, said plate having its longitudinal side portions bent at right angles to said plate along parallel lines passing through said slots.

8. A blank for making a car part comprising a metal plate having two spaced slots therein extending longitudinally thereof and terminating short of its ends, said plate having continuous flange surrounding each of said slots, said plate having its longitudinal side portions bent along parallel lines passing through said lslots into a channel, said side portions projecting from the original plane of said plate in a direction opposite to the direction in which the anges surrounding said slots project;

4. A blank for making a car part comprising a channel-shaped piece of metal having two slots therein eXtending longitudinally thereof and terminating short of its ends, said slots separating the bottoml portion of said Channel-shaped piece from the side portions thereof, said channel-shaped piece having a continuous flange surrounding each of said slots.

5. A lcar part made from a metal plate and comprising tivo spaced strips integral for a portion of their length at each end with the ends of a middle strip arranged between said strips, said first-mentioned strips and said middle strip being spaced apart to form an opening, each of said firstmentioned strips having a flange along the edge thereof which extends along said opening, said middle strip having a flange at each edge thereof which projects away from said opening, the ends of said flanges on said first-mentioned strips merging into the edges of said middle strip.

6;. car part made from a metal plate and comprising two spaced strips integral for a portion 'of their length at each end with the ends of a middle strip arranged between saidl strips, said first-mentioned strips and said middle stripv being spaced apart 4to form an opening7 each of said firstrnentioned strips having a flange along the edge thereof which extends along said opening and having a flange along `the opposite edge thereof, said middle strip having a flange which eXtends along each edge of the middle region thereof and projects away from said openingVthe ends of said rstmentioned flanges merging into the edges of said middle strip.

7. A @ar para made from 'a metal plat@ and comprising two spaced strips integral In witness whereof I have hereunto subfor a portion of their length at leach end scribedmy name in the presence of two sub- 10 i with the ends of a middle strip arranged soribing witnesses.

between said stri s, said first-mentioned strips and'said mipddle strip being spaced WILLIAM D' FORSYTH apart to form an opening, said irst men- Witnesses:

tioned strips each having a flange on each M. E. THOMAS,

edge thereof. J F. CALLAHAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

